mirror of
https://github.com/gorhill/uBlock.git
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115 lines
4.3 KiB
JavaScript
115 lines
4.3 KiB
JavaScript
/*******************************************************************************
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uBlock Origin - a browser extension to block requests.
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Copyright (C) 2019-present Raymond Hill
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This program is free software: you can redistribute it and/or modify
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it under the terms of the GNU General Public License as published by
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the Free Software Foundation, either version 3 of the License, or
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(at your option) any later version.
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This program is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU General Public License for more details.
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You should have received a copy of the GNU General Public License
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along with this program. If not, see {http://www.gnu.org/licenses/}.
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Home: https://github.com/gorhill/uBlock
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*/
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(function() {
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'use strict';
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let arg1 = '{{1}}';
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if ( arg1 === '{{1}}' ) { arg1 = ''; }
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let arg2 = '{{2}}';
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if ( arg2 === '{{2}}' ) { arg2 = ''; }
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let arg3 = '{{3}}';
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if ( arg3 === '{{3}}' ) { arg3 = ''; }
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const log = /\blog\b/.test(arg3)
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? console.log.bind(console)
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: ( ) => { };
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const newSyntax = /^[01]?$/.test(arg1) === false;
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let pattern = '';
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let targetResult = true;
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let autoRemoveAfter = -1;
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if ( newSyntax ) {
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pattern = arg1;
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if ( pattern.startsWith('!') ) {
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targetResult = false;
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pattern = pattern.slice(1);
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}
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autoRemoveAfter = parseInt(arg2);
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if ( isNaN(autoRemoveAfter) ) {
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autoRemoveAfter = -1;
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}
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} else {
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pattern = arg2;
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if ( arg1 === '0' ) {
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targetResult = false;
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}
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}
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if ( pattern === '' ) {
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pattern = '.?';
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} else if ( /^\/.+\/$/.test(pattern) ) {
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pattern = pattern.slice(1,-1);
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} else {
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pattern = pattern.replace(/[.*+?^${}()|[\]\\]/g, '\\$&');
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}
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const rePattern = new RegExp(pattern);
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const createDecoy = function(tag, urlProp, url) {
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const decoy = document.createElement(tag);
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decoy[urlProp] = url;
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decoy.style.setProperty('height','1px', 'important');
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decoy.style.setProperty('position','fixed', 'important');
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decoy.style.setProperty('top','-1px', 'important');
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decoy.style.setProperty('width','1px', 'important');
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document.body.appendChild(decoy);
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setTimeout(( ) => decoy.remove(), autoRemoveAfter * 1000);
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return decoy;
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};
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window.open = new Proxy(window.open, {
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apply: function(target, thisArg, args) {
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log('window.open:', ...args);
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const url = args[0];
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if ( rePattern.test(url) !== targetResult ) {
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return target.apply(thisArg, args);
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}
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if ( autoRemoveAfter < 0 ) { return null; }
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const decoy = /\bobj\b/.test(arg3)
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? createDecoy('object', 'data', url)
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: createDecoy('iframe', 'src', url);
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let popup = decoy.contentWindow;
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if ( typeof popup === 'object' && popup !== null ) {
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Object.defineProperty(popup, 'closed', { value: false });
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} else {
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const noopFunc = (function(){}).bind(self);
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popup = new Proxy(self, {
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get: function(target, prop) {
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if ( prop === 'closed' ) { return false; }
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const r = Reflect.get(...arguments);
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if ( typeof r === 'function' ) { return noopFunc; }
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return target[prop];
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},
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set: function() {
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return Reflect.set(...arguments);
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},
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});
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}
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if ( /\blog\b/.test(arg3) ) {
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popup = new Proxy(popup, {
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get: function(target, prop) {
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log('window.open / get', prop, '===', target[prop]);
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return Reflect.get(...arguments);
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},
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set: function(target, prop, value) {
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log('window.open / set', prop, '=', value);
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return Reflect.set(...arguments);
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},
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});
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}
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return popup;
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}
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});
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})();
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